我正在尝试解析Instagram API标准对象，如下所示：
stdClass Object
(
[pagination] => stdClass Object
(
[next_url] => https://api.instagram.com/v1/users /283549787/media/recent?access_token=3036118427.1677ed0.fceea7d5e10440b691a670ddb6a97783&max_id=1059902719332635377_283549787
[next_max_id] => 1059902719332635377_283549787
)
[meta] => stdClass Object
(
[code] => 200
)
[data] => Array
(
[0] => stdClass Object
(
[attribution] =>
[tags] => Array
(
[0] => vbb
[1] => 100k
[2] => ig
)
[type] => image
[location] =>
[comments] => stdClass Object
(
[count] => 22
[data] => Array
(
[0] => stdClass Object
(
[created_time] => 1461241283
[text] => weeeelll 💥
[from] => stdClass Object
(
[username] => thewolfcult
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/s150x150/12519175_228551560821189_1928102794_a.jpg
[id] => 2685463016
[full_name] => Wolf Cult
)
[id] => 17846791729091814
)
[1] => stdClass Object
(
[created_time] => 1461241621
[text] => this pic is LOL 😂😂😂
[from] => stdClass Object
(
[username] => class_y_man
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/s150x150/13129374_610084285824464_241975035_a.jpg
[id] => 189866780
[full_name] => Z.k
)
[id] => 17846791822091814
)
[2] => stdClass Object
(
[created_time] => 1461241649
[text] => Love it ðŸ˜
[from] => stdClass Object
(
[username] => kosmonelle
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/s150x150/13113731_1661552477439373_875045798_a.jpg
[id] => 2371520392
[full_name] =>
)
[id] => 17846791834091814
)
[3] => stdClass Object
(
[created_time] => 1461254879
[text] => ðŸ†ðŸ‘
[from] => stdClass Object
(
[username] => modelsandphotographers1
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/11336128_1774042986155389_99539322_a.jpg
[id] => 1418124928
[full_name] => Best Models & Photographers
)
[id] => 17846795935091814
)
)
)
[filter] => Normal
[created_time] => 1461230731
[link] => https://www.instagram.com/p/BEdQrSDytME/
[likes] => stdClass Object
(
[count] => 16672
[data] => Array
(
[0] => stdClass Object
(
[username] => jassi_bains_official
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/s150x150/12327958_458252344360785_973161765_a.jpg
[id] => 2302067650
[full_name] => Jassi bains
)
[1] => stdClass Object
(
[username] => ukay.tlb527
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/11906329_960233084022564_1448528159_a.jpg
[id] => 3101669439
[full_name] => Melvin Rosetta
)
[2] => stdClass Object
(
[username] => hahmedhossam121414411
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/11906329_960233084022564_1448528159_a.jpg
[id] => 3150267725
[full_name] => Bobby Ivan
)
[3] => stdClass Object
(
[username] => somi__0
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/s150x150/13102392_989473131142748_1189753865_a.jpg
[id] => 2190016506
[full_name] => Somi 👸ðŸ¼ðŸ’•
)
)
)
[images] => stdClass Object
(
[low_resolution] => stdClass Object
(
[url] => https://scontent.cdninstagram.com/t51.2885-15/s320x320/e35/12918470_1000175006702614_1067887222_n.jpg?ig_cache_key=MTIzMzIxNTIxNjA0MjAzODAyMA%3D%3D.2.l
[width] => 320
[height] => 320
)
[thumbnail] => stdClass Object
(
[url] => https://scontent.cdninstagram.com/t51.2885-15/s150x150/e35/c190.0.644.644/12918387_1540009256304246_510188281_n.jpg?ig_cache_key=MTIzMzIxNTIxNjA0MjAzODAyMA%3D%3D.2.c
[width] => 150
[height] => 150
)
[standard_resolution] => stdClass Object
(
[url] => https://scontent.cdninstagram.com/t51.2885-15/s640x640/sh0.08/e35/12918470_1000175006702614_1067887222_n.jpg?ig_cache_key=MTIzMzIxNTIxNjA0MjAzODAyMA%3D%3D.2.l
[width] => 640
[height] => 640
)
)
[users_in_photo] => Array
(
)
[caption] => stdClass Object
(
[created_time] => 1461230731
[text] => really , thank you 🆠#ig #100k #vbb
[from] => stdClass Object
(
[username] => mattiacanfa
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/s150x150/13113786_488414981352515_1701597009_a.jpg
[id] => 283549787
[full_name] => Mattia Canfarotta
)
[id] => 17846789149091814
)
[user_has_liked] =>
[id] => 1233215216042038020_283549787
[user] => stdClass Object
(
[username] => mattiacanfa
[profile_picture] => https://scontent.cdninstagram.com/t51.2885-19/s150x150/13113786_488414981352515_1701597009_a.jpg
[id] => 283549787
[full_name] => Mattia Canfarotta
)
)
)
我正试图获得这样的standard_resolution url，$json_result是对象：
foreach ($json_result->data->images->standard_resolution->url as $images){
print_r($images);
}
出于某种原因，没有归还任何东西。
我之所以能够解析，是因为数据是一个数组，它需要这样：
foreach ($json_result->data as $data){
foreach ($data->images->standard_resolution as $link){
echo "<img src='$link'></img>";
}
}